ten questions for a waste contractor mapped to the records the law already requires and to the weights a building now holds.
Contents
Abstract#
A building that weighs its own waste can ask its contractor questions that had no answer before. This blog tests one question: which questions does verified weight data make answerable and how many of them already rest on a record that the law requires someone in the chain to keep. It reviews the duty of care code of practice and the Digital Waste Tracking (England) Regulations 2026 and GOV.UK guidance on materials facility sampling and workplace recycling. It sets them beside three peer reviewed studies located through Google Scholar and published material from Wastify AI. The finding is that the records exist but rarely meet. A transfer note states the quantity of waste but the code sets no unit. A receiving site must say whether each weight is estimated or actual. A materials facility samples the material of each supplier at least once every 75 tonnes. Of ten questions set out here eight rest on a record that regulation or guidance already requires and all ten can be tested against weights held by the building. Research on measurement and shared information and trust suggests that one agreed record lowers the cost of the relationship for both sides.
Key Findings#
- The duty of care code lists the quantity of waste and whether it is loose or in a container among the contents of every transfer note. It sets no unit of measurement [3]. A quantity can be a count of containers rather than a weight. Transfer notes and season tickets are kept for 2 years [3].
- Under the Digital Waste Tracking (England) Regulations 2026 a permitted receiving site records for each waste code the total weight received and the unit used and whether the weight is estimated or actual [4]. An Environment Agency post shows the service becoming mandatory for waste collectors from October 2027 [5].
- A materials facility must take at least one input sample for every 75 tonnes delivered by each supplier and record target and non target and non recyclable material [6]. Quality is recorded by supplier. The supplier delivering to the facility is usually the collector rather than the building.
- Of the ten questions in Table 3 eight rest on a record required by regulation or guidance and two rest on the contract alone. All ten can be tested against weights held by the building.
- Across 344 supplier relationships procurement costs were five times higher for the least trusted buyer than for the most trusted [9]. Sharing demand and inventory data lowered supply chain costs by 2.2% on average and by up to 12.1% across the cases modelled [10]. Across 964,000+ weighings Wastify gives the building a record the contractor can check as well [1].
1. Introduction#
1.1 The Question#
Most conversations with a waste contractor follow the paperwork the contractor supplies. The invoice lists lifts. The monthly report gives tonnage and a recycling share. The transfer note confirms that a transfer took place. The building has nothing of its own to set against any of them so the questions it can ask are general ones. Verified weights change what can be asked.
This blog asks one question. Which questions does verified weight data make answerable and how many of them already rest on a record that the law requires someone in the chain to keep. The question can be tested. If the records behind each answer did not exist a building would be asking for new work. Section 3 shows that most of the records exist already. What has been missing is a building record to test them against.
1.2 Why This Matters Now#
Two developments put the records on the contractor side within reach.
First waste records are going digital from the receiving end back towards the producer. Digital waste tracking has been mandatory for permitted receiving sites in England since 1 October 2026 and each site states whether the weight it records is estimated or actual [4]. An Environment Agency post published on 30 April 2026 shows the service opening to an invited group of waste collectors from autumn 2026 and becoming mandatory for waste collectors from October 2027 [5].
Second quality is now measured by supplier. GOV.UK guidance published on 11 December 2025 sets out how a materials facility must sample incoming material from each supplier and record its quality [6]. Simpler Recycling also requires paper and card to be collected separately from plastic and metal and glass unless the collector completes a written co collection assessment [7]. Each of these produces a record a building can ask about.
1.3 Building on the Research Series#
This is the tenth blog in the Wastify AI research series [2].
- Research Blog 06 Found that the published rules allow one lift of a 1,100 litre container to be estimated at values 7.1 times apart.
- Research Blog 07 Found that five of nine common waste invoice errors need a collection record held by the building.
- Research Blog 08 Found that a contractor summary showed 39% recycling on an estate where weighed records reached 68% in six months.
- Research Blog 09 Found that in November 2023 Friday daytime saw 36% fewer workers than midweek in the analysis cited by the Mayor of London while one season ticket can cover 260 collections a year.
Each blog found a gap between the paperwork and the building. This blog turns those gaps into questions.
1.4 Scope and Structure#
This blog covers multi tenant commercial buildings in England that hold verified weights for their disposals and collections. It proceeds in six sections.
- Section 2 Describes the method and the sources.
- Section 3 Sets out five findings.
- Section 4 Discusses what they mean for property managers and sustainability leads and contractors.
- Section 5 States the limitations.
- Section 6 Answers the question.
It makes no claim about the records or conduct of any contractor. Level 0 is the competition: the questions arise because the building had no record of its own rather than because any supplier has done anything wrong.
Bring your own record to the next service review. Wastify AI delivers waste intelligence for commercial buildings so every question to your contractor starts from a weighed and timestamped fact.
2. Method#
2.1 Research Design#
The blog combines three evidence streams. The first is a document review of the records that regulation and guidance require along the chain from building to facility: the duty of care code of practice and the Digital Waste Tracking (England) Regulations 2026 and GOV.UK guidance on materials facility sampling and on workplace recycling. The second is peer reviewed research on measurement costs and shared information and trust between buyers and suppliers. Three studies were located through Google Scholar and each abstract or text was read at a recognised index or in a university hosted copy. The third is published material and platform data from Wastify AI.
From the document review the blog builds a set of ten questions and records for each one the source that requires the underlying record.
2.2 Sources#
External sources were opened directly between 20 and 21 October 2026 and each reference carries its access date.
Table 1: Sources consulted
Source | Data used | Vintage |
GOV.UK duty of care code of practice [3] | Transfer note content and destination checks and retention | Current code |
Digital Waste Tracking (England) Regulations 2026 [4] | Receiving site record of weight and whether it is estimated | SI 2026/729 |
Environment Agency post [5] | Phasing for an invited group of collectors and then all waste collectors | Posted 30 April 2026 |
GOV.UK materials facility sampling guidance [6] | Sampling by supplier and quality categories | Published 11 December 2025 |
GOV.UK workplace recycling guidance [7] | Separate paper and card and the co collection assessment | Last updated 3 October 2025 |
Barzel [8] | Measurement costs and duplicated checking | 1982 |
Dyer and Chu [9] | Trust and transaction costs across 344 relationships | 2003 |
Cachon and Fisher [10] | Value of shared information in a supply chain | 2000 |
Wastify AI Research Blogs 01 to 09 [2] | Earlier findings in the series | October 2026 |
Wastify AI [1] | Contractor Mode features and platform totals | Read 20 and 21 October 2026 |
Source: compiled for this blog from the references listed at the end.
2.3 Platform Data#
Contractor Mode features were taken from the published Wastify AI pages. Each contractor enters a unique PIN on the kiosk in the waste room and weighs every bin on the scale of the building before collection. Each weight is confirmed by stream and timestamped and charges are checked line by line against verified weights with discrepancies flagged and the evidence attached [1]. The same page states that buildings that start verifying routinely find discrepancies in the first month. That is a statement by Wastify and it has not been tested for this blog.
Platform totals were read from the live counter on the Wastify AI homepage. As of 21 October 2026 the counter showed 5,186,000+ kg weighed at disposal and 964,000+ verified weighings and 2,000+ tonnes of CO2e avoided and 380+ companies. The page shows £660,000+ recharged on verified data as of August 2026. Public totals are rounded down.
2.4 Classification and Calculations#
A question was classed as resting on a required record when a cited regulation or GOV.UK guidance document requires the record that would answer it. A question was classed as resting on the contract when no such requirement was found. Eight of the ten questions meet the first test which is 80%. The figures from the peer reviewed studies are reported as published and were not recalculated.
3. Findings#
3.1 The Transfer Note States a Quantity Without a Unit#
Section 3.5 of the duty of care code sets out what the written description of non hazardous waste contains. It includes the waste code and the quantity and nature of the waste and whether it is loose or in a container and the time and place of transfer and a statement that the waste hierarchy duty has been fulfilled [3]. The code lists a quantity. It does not say whether the quantity is a weight or a volume or a number of containers. Notes and season tickets are kept for 2 years [3].
A building with its own weights can therefore ask a precise question: in what unit is the quantity on our notes recorded and can it be stated in kilograms for each collection. The research on the costs of measuring what is traded explains why the question matters. Barzel argued that measurement is costly and that errors in measurement lead both sides of a trade to spend resources checking. He proposed that market arrangements arise to reduce that duplication [8]. A weight recorded once and accepted by both parties is such an arrangement.
3.2 The Receiving Site Records More Than the Building Receives#
From 1 October 2026 a permitted receiving site records for each waste code the total weight of waste received and the unit of measurement used and whether that weight is estimated or actual [4]. The record exists for every waste code received at a permitted site. A building can ask its contractor whether the weights reported for its collections were estimated or actual and how they compare with the bin weights the building recorded as each container left.
The code also sets out checks on destination. A producer should check that the next holder is authorised and can ask where the waste will be taken and check that the intended destination is authorised to accept it [3]. Authorisation can be an environmental permit or a registered exemption [3] which the Wastify glossary describes as a permit exemption for a registered low risk waste activity [1]. Each of these is a question with a documented answer. The building weights let it ask the question stream by stream with a quantity attached.
3.3 Quality Is Recorded by Supplier#
A materials facility must take at least one input sample for every 75 tonnes delivered by each supplier. It records the name and address of each supplier and the tonnes received and whether sampled material is target or non target or non recyclable [6]. The facility therefore holds a quality record for each supplier. Where a contractor delivers material from many buildings on one round the record describes the round rather than the building.
The building can still ask what the facility records for the material the contractor delivers and how that compares with the stream weights and contamination records held in the building. For paper and card the building can ask whether the stream is collected separately as Simpler Recycling requires and if not whether a written co collection assessment exists [7].
Table 2: Records along the chain and what each can answer
Record | Required by | Held by | Can answer | Cannot answer alone |
Transfer note | Duty of care code section 3.5 [3] | Producer and carrier for 2 years | Waste code and quantity and container and time and place and hierarchy statement | Weight in kg where the quantity is a container count |
Season ticket log | Duty of care code section 3.5 [3] | Holder of the season ticket | Collection times and quantity | Anything if the log is not kept |
Receiving site record | DWT Regulations Schedule 1 [4] | Permitted receiving site | Total weight under each waste code and whether it is estimated or actual | Which building a load from a mixed round came from |
Facility sampling record | Materials facility guidance [6] | Materials facility | Quality of material by supplier | Quality by building on a mixed round |
Co collection assessment | Simpler Recycling guidance [7] | Collector | Why paper and card are collected with other dry recyclables | Stream weights |
Building record | Wastify AI [1] | The building | Weight and stream and time and photograph of each disposal and each collection | What happens after the waste leaves |
Source: document review for this blog drawing on [1] [3] [4] [6] and [7].
3.4 Ten Questions and the Record Behind Each#
Table 3 sets out ten questions grouped by quantity and frequency and quality and destination and compliance. For each it names the record that would answer it and the source that requires that record and the building data that tests the answer.
Table 3: Ten questions for a waste contractor and the record behind each
Group | Question | Record that answers it | Source of the requirement | Building data that tests it |
1. Quantity | In what unit is the quantity on our transfer notes recorded and can it be stated in kg for each collection | Transfer note | Code section 3.5 [3] | Net weight of each bin at collection |
2. Quantity | Were the weights reported at the receiving site for our collections estimated or actual | Receiving site record | DWT Schedule 1 [4] | Bin weights as each container left |
3. Quantity | Which invoice lines are priced on a nominal fill per lift | Contract schedule | Contract only | Weight per lift by container |
4. Frequency | Do the collection times in our season ticket log match the lifts invoiced | Season ticket log | Code section 3.5 [3] | Timestamped collections by stream |
5. Quality | What does the receiving facility record about the material you deliver from our round | Facility sampling record | Facility guidance [6] | Stream weights and contamination records |
6. Quality | What evidence supports each contamination or rejection charge | Load records held by the contractor | Contract only | Photographs and stream records |
7. Destination | Which authorised site receives each stream and under what permit or exemption | Destination checks | Code sections 2.4 and 3.4 [3] | Stream weights for each collection |
8. Destination | Which step of the waste hierarchy does each stream reach | Hierarchy statement on each note | Code section 3.5 [3] | Stream weights to apply each route to |
9. Compliance | Is paper and card collected separately and if not where is the written co collection assessment | Co collection assessment | Simpler Recycling guidance [7] | Separate weights for paper and card |
10. Compliance | Which registration or permit number authorises you to carry our waste and is it on every note | Transfer note | Code section 3.5 [3] | Collection records to match each note |
Rest on a required record | 8 of 10 | 10 of 10 testable |
Source: framework for this blog drawing on [1] [3] [4] [6] and [7].
Eight of the ten questions rest on a record required by regulation or guidance. The two that rest on the contract alone concern nominal fill pricing and contamination charges. Every question can be tested against the weights and timestamps and photographs held by the building. None asks the contractor to create a record that the rules do not already expect someone to keep.
3.5 What a Shared Record Changes#
The research on supplier trust and procurement costs studied 344 supplier and automaker relationships in the United States and Japan and Korea. Suppliers that saw a buyer as trustworthy had lower transaction costs and shared more information. Procurement costs were five times higher for the least trusted automaker which spent more of its time with suppliers on contracting and haggling [9]. Trust and information sharing reinforced each other.
The research on sharing demand and inventory data with a supplier adds a caution. Full information sharing lowered supply chain costs by 2.2% on average and by up to 12.1%. Cutting lead times nearly in half cut costs by 21% on average and halving batch sizes cut them by 22% [10]. The data was worth most when it changed the physical flow. For a building that means the value of a shared record lies in the changes it supports to frequency and containers and streams rather than in the exchange of figures alone.
Contractor Mode puts both parties on one record. The contractor weighs every bin on the scale of the building before collection under its own PIN and the weight is confirmed by stream and timestamped [1]. The building and the contractor then look at the same figure. Any charge can be followed down a five step walk down to a photograph of the bags on the scale [1].
Ask better questions because you hold better records. Wastify AI puts the building and the contractor on the same weighed and photographed figures.
4. Discussion: What This Means for the Reader#
4.1 For Property Managers#
Start with the two quantity questions: the unit on the transfer note and whether receiving site weights were estimated or actual [3 4]. Both rest on records the rules already require. Separate questions that rest on regulation from questions that rest on the contract because they lead to different conversations. Bring a record of every transfer out of the building so each answer can be compared with a dated and weighed figure.
4.2 For Sustainability Leads#
The destination questions matter most for reporting. A stream may reach anaerobic digestion or in vessel composting for food or a fuel such as refuse derived fuel for residual waste. Each route carries a different conversion factor when tonnes are turned into emissions. Ask for the route of each stream and apply it to verified weights to produce ESG reporting from weighed records. Under PPN 006 bidders for central government contracts above £5 million a year must publish a carbon reduction plan and public bodies consider environmental benefit before procuring services under the Social Value Act. A building can ask whether its contractor publishes a plan and set reporting expectations in a supplier code of conduct.
4.3 For Contractors#
Nothing here suggests that any contractor keeps poor records. The questions in Table 3 mostly ask for records the rules already expect. The research suggests that trust lowers the cost of the relationship and that shared data pays when it changes the service [9 10]. A contractor that accepts the weights recorded on the scale of the building removes a duplicated measurement in the sense Barzel described [8]. The Wastify partner programme for contractors and FM companies is built on the same idea: tender responses that carry evidence rather than adjectives [1].
5. Limitations#
This blog has five limitations that a careful reader should weigh.
- The document review covers rules for England. Wales and Scotland and Northern Ireland differ in places.
- The date for waste collectors comes from the timeline in an Environment Agency post and may change.
- The ten questions and their classification were constructed for this blog. Another reviewer might group them differently or find a requirement this review did not.
- The peer reviewed studies concern automotive supply relationships and retail inventory models and markets in general. They are applied to waste contracts by analogy and their percentages belong to their own settings.
- The statement that buildings routinely find discrepancies in the first month is made by Wastify and was not tested here. Platform totals are rounded down and grow daily.
6. Conclusion#
Verified weight data turns general concerns into specific waste contractor questions. Most of those questions already have a record behind them. The transfer note states a quantity. The receiving site must say whether a weight is estimated or actual. The materials facility must record quality by supplier. Of ten questions eight rest on a record required by regulation or guidance and all ten can be tested against the building record.
The records exist. Verified weights let them meet. Research on trust and shared information suggests that a single agreed record lowers the cost of the relationship for both sides. A building that wants to know how much of its own waste data it could defend in that conversation can start with the waste data self assessment in two minutes.
References#
[1] Wastify AI published material and platform data. Contractor Mode and chain of custody and duty of care and partner programme pages and the glossary. Platform totals of 5,186,000+ kg and 964,000+ verified weighings and 2,000+ tonnes CO2e avoided and 380+ companies as of 21 October 2026 and £660,000+ recharged as of August 2026 read from the homepage. wastify.co.uk.
[2] Wastify AI Research Blogs 01 to 09. October 2026. wastify.co.uk.
[3] GOV.UK. Waste duty of care code of practice. Sections 2.4 and 3.4 and 3.5 and 3.6. gov.uk. Accessed 21 October 2026.
[4] legislation.gov.uk. The Digital Waste Tracking (England) Regulations 2026: Schedule 1. SI 2026/729 paragraphs 13 and 14. legislation.gov.uk. Accessed 21 October 2026.
[5] Environment Agency. Digital Waste Tracking goes live: a major step forward in stopping waste crime. Posted 30 April 2026. environmentagency.blog.gov.uk. Accessed 21 October 2026.
[6] GOV.UK. Sample and measure and record the waste your materials facility processes. Published 11 December 2025. gov.uk. Accessed 21 October 2026.
[7] GOV.UK. Simpler recycling: workplace recycling in England. Last updated 3 October 2025. gov.uk. Accessed 20 October 2026.
[8] Barzel Y. Measurement cost and the organization of markets. Journal of Law and Economics 25(1) pages 27 to 48. 1982. sfu.ca. Accessed 21 October 2026.
[9] Dyer JH and Chu W. The role of trustworthiness in reducing transaction costs and improving performance: empirical evidence from the United States and Japan and Korea. Organization Science 14(1) pages 57 to 68. 2003. ideas.repec.org. Accessed 21 October 2026.
[10] Cachon GP and Fisher M. Supply chain inventory management and the value of shared information. Management Science 46(8) pages 1032 to 1048. 2000. ideas.repec.org. Accessed 21 October 2026.
Go into your next contractor review with evidence. Book a demo with Wastify AI for a one hour session tailored to your buildings.
Frequently Asked Questions#
What should a building ask its contractor first?#
Two quantity questions: in what unit the quantity on its transfer notes is recorded and whether the weights reported at the receiving site were estimated or actual [3 4].
Must a transfer note show the weight of waste?#
The code lists the quantity of waste and whether it is loose or in a container among the contents of the note. It does not set a unit so the quantity may be a count of containers [3].
Can a building ask where its waste goes?#
Yes. The code says a producer can ask the next holder where the waste will be taken and check that the destination is authorised to accept it [3].
Will facility sampling show the quality of our recycling?#
It shows the quality of material from each supplier. Where a contractor collects from many buildings the record describes the round rather than one building [6].
What is a co collection assessment?#
A written assessment by a collector explaining why paper and card are collected with other dry recyclables rather than separately under Simpler Recycling [7].
Does asking these questions damage the relationship?#
The research points the other way. Buyers seen as trustworthy had lower transaction costs and received more information from suppliers [9].
When will contractors record collections digitally?#
The timeline in an Environment Agency post shows digital waste tracking becoming mandatory for waste collectors from October 2027 [5].
How can a building check its own records before the meeting?#
Living AI answers plain English questions about weighings and collections with the sources attached so each question can be prepared from the record.